Red Oil Level light switch off engine

[Donneydon]

A class 180d



Red warning Engine oil level low switch off engine keeps coming on after 15 seconds driving.

Changed oil level sensor
Changed oil pressure sensor
Changed Oil pump
Changed oil filter
Changed oil


can anyone help with this fault?

 

[Wighty]

A class 180d



Red warning Engine oil level low switch off engine keeps coming on after 15 seconds driving.

Changed oil level sensor
Changed oil pressure sensor
Changed Oil pump
Changed oil filter
Changed oil


can anyone help with this fault?

That’s getting expensive changing parts buddy , are there any fault codes on the car after a diagnostic check ?

 

[LostKiwi]

Is that 1t minutes driving or does 15 minute idling do the same? What happens if you measure the oil immediately after the message?
I suspect this may need live data looking at to determine what's happening.

 

[Donneydon]

That’s getting expensive changing parts buddy , are there any fault codes on the car after a diagnostic check ?

No fault codes at all

 

[Donneydon]

Is that 1t minutes driving or does 15 minute idling do the same? What happens if you measure the oil immediately after the message?
I suspect this may need live data looking at to determine what's happening.

15 seconds driving comes on. If i switch off car for 15mins it goes away but drive again for 15 seconds comes back on. If in idle cold start no warning light until driven

 

[ajlsl600]

all 4 the sake of 20 cents of steel flex and a level marker.. think you should go over what you already changed to see nothing wrong there then get it on diagnostics and see as per lk. my 1st comment is exactly how i feel about this kind of issue .DTF.

 

[Botus]

sounds electrical to me

a common misconception... on most cars "the red oil light" means its detecting no or extremely low engine oil pressure STOP ! (its never for low oil quantity, although of course if there is none you will always get No Pressure...)

if this is no oil, a broken pump, jammed open pressure relief valve or extreme wear on a big end or main bearing, you usually get about another mile before a con rod pops out to indicate you should have stopped earlier.

On an old car with a lots of miles and known wear, to see this in hot weather at low idle speeds is quite normal... otherwise you hope to never ever see it in the life of a car... except when you turn the key and you get to check if the bulb works

as soon as the light comes on in normal motoring unless its an electrical issue the engine is normally toast. the exception is posh synthetic oils seem to allow up to 5 miles of gentle driving with no oil without total destruction.... but its not a great idea. If your life depends on it... check level, if Ok u get to gamble on destroying engine and carrying on..... if its been doing it for >500 miles it must be electrical or it would have let you know

the best idea is to connect a pressure gauge to the oil system and see what you get and go from there

 

[LostKiwi]

sounds electrical to me

a common misconception... on most cars "the red oil light" means its detecting no or extremely low engine oil pressure STOP ! (its never for low oil quantity, although of course if there is none you will always get No Pressure...)

if this is no oil, a broken pump, jammed open pressure relief valve or extreme wear on a big end or main bearing, you usually get about another mile before a con rod pops out to indicate you should have stopped earlier.

On an old car with a lots of miles and known wear, to see this in hot weather at low idle speeds is quite normal... otherwise you hope to never ever see it in the life of a car... except when you turn the key and you get to check if the bulb works

as soon as the light comes on in normal motoring unless its an electrical issue the engine is normally toast. the exception is posh synthetic oils seem to allow up to 5 miles of gentle driving with no oil without total destruction.... but its not a great idea. If your life depends on it... check level, if Ok u get to gamble on destroying engine and carrying on..... if its been doing it for >500 miles it must be electrical or it would have let you know

the best idea is to connect a pressure gauge to the oil system and see what you get and go from there

On most newer MBs the red warning is accompanied by text describing the problem, not just a red light like in the good old days.
It's interesting the warning is acted not a white or yellow followed by red.
The 210 for example pops up a warning "Add oil" but doesn't tell you to stop.

 

[ajlsl600]

op changed oil pump .oil and filter . so unless pump drive failed or something has come apart releasing all oil press internally odds are electrical .if filter off and for peace of mind ,cut that open and interview it for any bits /chips none seen find oil press switch ,fix manual gauge see above 50psi oil cold, go back to electrics i thought op was only complaining oil level low light was on ? op yr hand book describes that as oil low top up right ? for some good reason my 2013 ml still has a dipstick !! seeing it made me pretty happy....

 

[Donneydon]

op changed oil pump .oil and filter . so unless pump drive failed or something has come apart releasing all oil press internally odds are electrical .if filter off and for peace of mind ,cut that open and interview it for any bits /chips none seen find oil press switch ,fix manual gauge see above 50psi oil cold, go back to electrics i thought op was only complaining oil level low light was on ? op yr hand book describes that as oil low top up right ? for some good reason my 2013 ml still has a dipstick !! seeing it made me pretty happy....

100% electrical fault. MB have been very cheap using a Renault DCI engine in the A class range

 

[Donneydon]

sounds electrical to me

a common misconception... on most cars "the red oil light" means its detecting no or extremely low engine oil pressure STOP ! (its never for low oil quantity, although of course if there is none you will always get No Pressure...)

if this is no oil, a broken pump, jammed open pressure relief valve or extreme wear on a big end or main bearing, you usually get about another mile before a con rod pops out to indicate you should have stopped earlier.

On an old car with a lots of miles and known wear, to see this in hot weather at low idle speeds is quite normal... otherwise you hope to never ever see it in the life of a car... except when you turn the key and you get to check if the bulb works

as soon as the light comes on in normal motoring unless its an electrical issue the engine is normally toast. the exception is posh synthetic oils seem to allow up to 5 miles of gentle driving with no oil without total destruction.... but its not a great idea. If your life depends on it... check level, if Ok u get to gamble on destroying engine and carrying on..... if its been doing it for >500 miles it must be electrical or it would have let you know

the best idea is to connect a pressure gauge to the oil system and see what you get and go from there

I think you are right. Its an electrical problem. Typical for Renault engine

 

[Donneydon]

Hi all or anyone that has this problem in the future

it was my oil pressure sensor that went faulty.

A class have a pressure sensor and oil level sensor

If your oil level is fine and your engine has correct oil pressure then one of the 2 sensors need replacing.

After 4 mechanics i finally got it resolved

 

[mioba]

Glad your sorted.

Not sure about the hit on the wallet.

Saddens me to read such posts thinking what time, money and effort wasted using not competent mechanics,

well hopefully lesson learned

 

[Botus]

Saddens me to read such posts thinking what time, money and effort wasted using not competent mechanics,

manufacturers are spending more time trying to make them die and for only main dealer equipment to be able to fix them than they do on any other part of the cars development

the kit to plug in and fix is 10k a year, if you are a multi car garage you probably make so little money, the customers phone has more diagnostic kit than they have.... after all they have to buy tools to do the mechanical work everyday as yet another unnecessary fastening had been used.....

yes 3k will get you decent multi car diagnostics but even these are 2k a year in software updates and they can't do all the stuff main dealer kit can.... and of course merc developing unneeded stuff only their kit can fix faster then the others can dev their software playing catch up

we are close to buy... use for three years and then scrap it
even a cam chain is made of degradable metal.... last 3 years any mile then magically turns to dust

 

[alexanderfoti]

Hi all or anyone that has this problem in the future

it was my oil pressure sensor that went faulty.

A class have a pressure sensor and oil level sensor

If your oil level is fine and your engine has correct oil pressure then one of the 2 sensors need replacing.

After 4 mechanics i finally got it resolved

Yes this is a common failure on this engine, in this car!

 

[waqarazhar]

Hi all or anyone that has this problem in the future

it was my oil pressure sensor that went faulty.

A class have a pressure sensor and oil level sensor

If your oil level is fine and your engine has correct oil pressure then one of the 2 sensors need replacing.

After 4 mechanics i finally got it resolved

I have an A160, 2011. As I am writing this post, I am struggling with the same issue. The low oil warning comes up while I am driving and stays there for a minute or two.

I recently had a service done on my car by an authorized MB dealer, and they were kind enough to do a free diagnostic but didn't find anything. No code and no error message while they were driving it. Strangely, after I picked up my car, the message came up after 5 miles.

I am also reaching the same conclusion that the sensor needs to be changed. The dilemma here is that if I do a diagnostic on my car before changing the sensor, it will cost almost the same as changing the sensor.

Any suggestions on what should I do?

 

[mioba]

Post #12

 

[mattkh]

Post #12

But the OM640 engine is not a Renault engine..???

 

[Craiglxviii]

But the OM640 engine is not a Renault engine..???

A160 takes the 1.5 K9K DCI engine a la Qashqai

 

[mattkh]

A160 takes the 1.5 K9K DCI engine a la Qashqai

But post #16 member shows om640 on the left column.